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Weistec C63 AMG/M156 V8 Supercharger update - 498 whp, $14,999

Weistec has released updated information on their C63 AMG supercharger kit. At just 5 psi on 91 octane the car puts out 498 horsepower to the wheels. The price has been set at $14,999 for the Stage I and we wonder if they will be able to go beyond these numbers with the transmission limits in place. The supercharger is a 2.3 liter twin screw with a liquid to water intercooler. Custom dyno tuning is included obviously, we look forward to seeing how this develops.

A 30 second vid and everyone thinks the impossible is possible. LOL. Let's go over a couple reasons why this blower will never work or sell.

Cost: If you think this blower is coming in under the $15K mark lol, well, I don't know what to tell you. That nixes 99% of the potential market, as customers already complain about the cost of significantly less expensive yet highly effective parts. We'll see how many "I'm in"s we'll get once the price is announced.

Overall Output: This will be capped by the trans and fuel management, even if they are using a piggyback unless they replaced the entire fuel system ($$$) the max you're going to see this combo put out is ~500rwhp. Which is what we get from headers, mids, tuning, and airboxes N/A. If you spent the $ to replace the fuel system you still have cast pistons and 11.3:1 static CR with PFI to deal with. Meaning you are not only electronically and driveline limited (trans) you are also mechanically limited by the shortblock.

Blower Size: I can see that they were targeting stock or near stock cars with this kit as the inlet issue and wrong size supercharger were used for this application. If they had higher outputs in mind (aka going in and rebuilding the shortblock) they would've used a 2.8L or larger blower.

Trans: Unless they cracked the Holy Grail and I don't see that being the case, this car will $#@! a trans in the first week. It should be making an easy 525-550rwtq with that 500rwhp, BTDT with that kind of torque and the results weren't pretty. Now add to the load that PD blowers make peak boost just off idle (especially in a low boost app like this) and you have a serious recipie for disaster.

Converter: LOL, just LOL for now.

Inlets: The blower in question uses the stock inlet tubes which are restrictive on a N/A M156, PD blowers are especially effected

I know there are quite a few M156 owners that want to believe this is a cost effective forced induction solution, however if you know the facts now you can already tell how limited (power production wise) and expensive this kit will be. Aside from that you can make the same power N/A with much greater reliability, no heatsoak, etc.

In summation I feel this will be the most overanticipated and underdelivering mod yet for the M156, cost per $, and that is if they can not only get it to run, but to do so without grenading the driveline first. Like it or not nothing about the M156 (save cylinder count) is on par with the S65 in terms of being ready for forced induction.

You bring up a lot of good points Andy....NOT!!!! LMAO when I read this post, he hit the nail on the head exactly ZERO times.

AFAIK, there are Four 722.9 TCU tools, 3 in Europe, 1 in NJ, all 4 belong to MB/AMG and no one in the aftermarket has access to them.

On paper this project is still a disaster because zero driveline solutions have been presented. They figured out the easy part (getting it to run/idle) as others have in the past (Brabus), now getting it to work along with the rest of the driveline (shorterm or longterm) is a different story altogether.

Fact is we can offer upgraded engine internals now. We can also offer upgraded trans internals now however they are useless unless the software can be changed to accomodate them and the application at hand. Aside from that how many people will spend $40K upgrading the engine/trans internals/fuel system only to find out they have a tiny 2.3L blower sitting on top of the engine that then becomes the limiting factor.

Until I see hard data telling me otherwise (and that would be a first in this instance) there are just too many problems and stipulations on the table for this to make any sense. Best case scenario this is a quiet 480-500rw solution.

Another bullseye by Andy ROFLMAO!!!

Weistec is currently making 660 whp on at least two cars (mine and Earls), we are both running stock trans, converters and TCU's

He should have posted that under his JBond account. You know...cause everything they ever posted was FACT...LOL.

...I personally like the following Andy quotes "even if they are using a piggyback unless they replaced the entire fuel system ($$$) the max you're going to see this combo put out is ~500rwhp"...Andy's posts in this thread alone are enough to completely discredit his knowledge of these motors and drivetrains.

...I personally like the following Andy quotes "even if they are using a piggyback unless they replaced the entire fuel system ($$$) the max you're going to see this combo put out is ~500rwhp"...Andy's posts in this thread alone are enough to completely discredit his knowledge of these motors and drivetrains.

Clearly they exceeded the supposed 500 whp limit by quite a bit. Those posts look very odd now.